"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
|7614296||Method and device for fluid flow parameters determination|
A method and device for a liquid media parameters determination, wherein an extended heater oriented along the fluid flow is installed in the fluid flow. Fluid flow temperature is measured. The heater is heated up and the temperatures at the interfaces “heater fro...